O'Connell/O'Connor in Milltown Malbay

O'Connell/O'Connor in Milltown Malbay

Looking for info on my ancestors from Milltown Malbay. A daughter named Mary Ann was born there in May of 1853. She emigrated to the USA in the early 1870's and was my g/g/g/ grandmother. Unfortunately, I have no info on her parents or siblings, and the few materials I do have show her alternately as O'Connor, O'Connell and derivatives thereof, so I can't even be certain which she was. Any assistance would be treasured.